1、Designation: E413 10Classification forRating Sound Insulation1This standard is issued under the fixed designation E413; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates th
2、e year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This classification covers methods of calculating single-number acoustical ratings for l
3、aboratory and field measure-ments of sound attenuation obtained in one-third octave bands.1.2 The name given to the single-number rating is assignedby the test method that invokes this classification.1.3 Test methods that invoke this classification include:1.3.1 Test Method E90The single-number rati
4、ng is calledsound transmission class (STC).1.3.2 Test Method E336Single-number ratings are fieldsound transmission class (FSTC), noise isolation class (NIC),and normalized noise isolation class (NNIC).1.3.3 Test Method E596The single-number rating iscalled noise isolation class (NIC).1.3.4 Test Meth
5、od E1414The single-number rating iscalled ceiling attenuation class (CAC).1.4 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.2. Referenced Documents2.1 ASTM Standards:2C634 Terminology Relating to Building and EnvironmentalAcou
6、sticsE90 Test Method for Laboratory Measurement of AirborneSound Transmission Loss of Building Partitions and Ele-mentsE336 Test Method for Measurement of Airborne SoundAttenuation between Rooms in BuildingsE596 Test Method for Laboratory Measurement of NoiseReduction of Sound-Isolating EnclosuresE1
7、332 Classification for Rating Outdoor-Indoor Sound At-tenuationE1414 Test Method for Airborne Sound Attenuation Be-tween Rooms Sharing a Common Ceiling Plenum2.2 ISO Standard:3ISO 717 Rating of Sound Insulation for Dwellings3. Terminology3.1 The following terms used in this classification aredefined
8、 in Terminology C634:airborne sound,field sound transmission class,level,noise isolation class,noise reduction,normalized noise isolation class,one-third octave band,sound insulation,sound isolation, andsound transmission loss.4. Significance and Use4.1 These single-number ratings correlate in a gen
9、eral waywith subjective impressions of sound transmission for speech,radio, television, and similar sources of noise in offices andbuildings. This classification method is not appropriate forsound sources with spectra significantly different from thosesources listed above. Such sources include machi
10、nery, indus-trial processes, bowling allies, power transformers, musicalinstruments, many music systems, and transportation noisessuch as motor vehicles, aircraft and trains. For these sources,accurate assessment of sound transmission requires a detailedanalysis in frequency bands. A single-number s
11、ound transmis-sion rating for building faade elements is given in Classifica-tion E1332.4.2 The single-number ratings obtained can be used tocompare the potential sound insulation of partitions or floorstested in laboratory conditions (STC) or the actual soundisolation between different suites in bu
12、ildings (NNIC, NIC).The rating for a partition built and tested in a building may belower than that obtained for a partition tested in a laboratorybecause of flanking transmission or construction errors.1This classification is under the jurisdiction of ASTM Committee E33 onBuilding and Environmental
13、 Acoustics and is the direct responsibility of Subcom-mittee E33.03 on Sound Transmission.Current edition approved Sept. 1, 2010. Published October 2010. Originallyapproved in 1970. Last previous edition approved in 2004 as E413 04. DOI:10.1520/E0413-10.2For referenced ASTM standards, visit the ASTM
14、 website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036,
15、 http:/www.ansi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NOTE 1A similar rating procedure, described in ISO 717, providessingle figure sound insulation ratings with a frequency range that extendsfrom 100 to 3150 Hz with no
16、 maximum deficiency specified at individualfrequencies. For most partitions, the two ratings differ by only one or twopoints.5. Procedure5.1 The reference contour is defined by the array of valuesgiven in Table 1.5.2 Round the data to which the contour is to be fitted to thenearest integer.NOTE 2The
17、 contour in Table 1 has a rating of zero. Other contoursmay be derived by adding the same integer to all values in the table.5.3 Fit the reference contour to the data by increasingsimultaneously all the values in Table 1 in 1-dB incrementsuntil some of the data are less than the shifted referencecon
18、tour.5.4 At each frequency calculate the difference between theshifted reference value and the data. If a measured data point isless than the reference contour this is a deficiency; onlydeficiencies are counted in the fitting procedure. Continue toincrease the reference contour values to the highest
19、 level thatwill satisfy the following conditions:5.4.1 The sum of the deficiencies is less than or equal to 32dB; and5.4.2 The maximum deficiency at any one frequency doesnot exceed 8 dB.5.5 The single-number rating is given by the value of theshifted reference contour at 500 Hz.6. Presentation of R
20、esults6.1 It is recommended that the data be plotted to the scalesizes recommended in Note 3, along with the shifted referencecontour (see Figs. X1.1 and X1.2). This type of presentationdraws attention to the frequency regions of the data that limitthe single-number rating.NOTE 3Recommended graph sc
21、ale sizes are 2 mm/dB for the ordinateand 50 mm per 10 to 1 frequency ratio for the logarithmic abscissa. Theordinate scale should start at 0 dB. If larger or smaller scale sizes areunavoidable, the same aspect ratio of 25 dB per 10 to 1 frequency ratioshould be retained.7. Keywords7.1 architectural
22、 acoustics; building design; ceiling attenu-ation class (CAC); field sound transmission class (FSTC);noise isolation class (NIC); normalized noise isolation class(NNIC); partitions (buildings); sound insulation rating; soundtransmission class (STC)APPENDIX(Nonmandatory Information)X1. EXAMPLES OF FI
23、TTED CONTOURSX1.1 Figs. X1.1 and X1.2 show examples of transmissionloss data fitted to the reference contour. In Fig. X1.1, the STCis 24 and the 8-dB limitation in 5.4.2 is not invoked. In Fig.X1.2 the STC is 30 and the 8-dB limitation is invoked at 2500Hz.TABLE 1 Reference Sound Insulation Contour
24、for Calculation ofSingle-Number RatingsFrequency, Hz 125 160 200 250 315 400 500 630Value, dB 16 13 10 7 4 1 0 1Frequency, Hz 800 1000 1250 1600 2000 2500 3150 4000Value,dB 23444444E413 102NOTEThe deficiencies are shown as bars at the bottom of the chart.The 8-dB limitation is not invoked.FIG. X1.1
25、Reference Contour (Solid Line) Fitted to TransmissionLoss Data (Symbols + Line)E413 103ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of
26、the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Y
27、our comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your commen
28、ts have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or mu
29、ltiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).NOTEThe deficiencies are shown as bars at the bottom of the chart.The 8-dB limitation is invoked at 2500 Hz.FIG. X1.2 Reference Contour (Solid Line) Fitted To TransmissionLoss Data (Symbols + Line)E413 104
